Why do elephants have wrinkled skin? The intricate web of cracks and crevices that gives African elephants their distinctive look is, in fact, an essential adaptation. Their ability to stay cool in hot African temperatures is thanks to these "wrinkles," which aren't actually wrinkles at all, but millions of microscopic cracks in their epidermis.

Can spiders fly? When you think of the greatest aviators in the natural world, you probably think of the usual winged suspects like birds, bees, and butterflies. But some of the earth's eight-legged creatures also have specialized ways of soaring through the skies-no wings necessary.